Ug is a terrible name for a boss, but he was a decent fight.
He at first possesses a T-Rex fossil, which was an okay battle.
Turns out that he’s a caveman ghost.
Definitely not as scary as his dinosaur form.
And it’s much simpler to figure out how to beat him too.
He was easy enough.
After defeating him, you get to rescue the Blue Toad.
And more importantly, you get the next elevator button.